Work out the two missing terms of the sequence below. Add 1.5 each time: __, 9.0, 10.5, 12.0, __, ...

Subtract 1.5 to find the first term: \(9.0-1.5=7.5\).

Add 1.5 to find the next term: \(12.0+1.5=13.5\).

Ответ: 7.5 и 13.5